... . A wide range of perforated sheets are available in all metals and perforated sheets widely used in insulation panels, ... non-galvanized, GI, aluminum and stainless steel 304,316,316L, all grades.7.Perforated sheets are available in round holes and various ... , GI, aluminum; stainless steel 304,316,316L and all other grades.8.Specification: Special requirements are available.Plate MaterialThickness of ...